All of the information regarding personal games played is in "Chess Insights" > Analytics from your games... found in everybody's profile.
For lichess to create a personal explorer file, available for reference during correspondence games by only one player does not seem likely to happen.
I'm self serving when it comes to ideas that I cannot expect a site to implement.
I'm currently into, well not a personal explorer, but a tool that lets me analyze with a native engine in the browser window. I cannot expect lichess to ever implement this given that it requires a desktop application and lichess strongly favors in browser solutions.
By now I tried several options and finally nailed it down to an npm package that essentially takes an "npm install -g", type in the package name in the console window then go to localhost:[port] and there you go: you can start analyzing in the browser with a native engine. The app can download and import lichess games by id, so I can copy the id from the url line of the browser without having to open lichess analysis board and copy the pgn manually. It also has a book that it can save to the hard drive, so finally I can start building a book with quality post mortem analysis of my games, without having to open a separate application.
The takeaway is: do it your self.
Great idea, I was about to sugest it also.